Halloween With Ruff Ruffman is Season 6 Episode 17.

Plot Edit

It's the year of Halloween and Ruff is dressed as the late Michael Jackson. In order for today's challenge, he sends Ash (dressed as Ryu), Rikochet (dressed as Billy Lee), Mel (dressed as Sam Simpson), Sakura (dressed as Baby Bonnie Hood), Virgil (dressed as Static) and Kitty (dressed as Shadowcat) to Hammond Castle in order to help The Powerpuff Girls (dressed as Liberty Belle, Harmony Bunny and Mange) celebrate the costume party.